C. Rajagopalachari's formula (or C. R. formula or Rajaji formula) was a proposal formulated by Chakravarti Rajagopalachari to solve the political deadlock between the All India Muslim League and the Indian National Congress on the independence of British India. The League's position was that the Muslims and Hindus of British India were of two separate nations and henceforth the Muslims had the right to their own nation. The Congress, which had predominantly Hindu members and opposed to the idea of partitioning the Subcontinent. With the advent of the Second World War the British administration sought to divide the Indian political elite into two factions so as to make sure that the Indian independence movement does not make large progress, taking advantage of the war.
C. Rajagopalachari, a Congress leader from Madras, devised a proposal for the Congress to offer the League the predominantly Muslim region that became Pakistan based on a plebiscite of allowing the people in those regions where Muslims were in the majority. Although the formula was opposed even within the Congress party, Gandhi used it as the basis of his proposal in talks with Jinnah in 1944. However, Jinnah rejected the proposal and the talks failed and thus C.R. Formula did not come into effect.